Wire-stripping device.



- P. A. SWAN. n WIRE SHIPPING DEVIGB. APPLICATION FILED SEPT. 29, 1909.

A Patented Aug.23,191o.`

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255 MJT To all 'it may concern.

UNITED STATES PATENT OFFICE.

i `FREDEBICK L. SWAN, F CLIFTNDALE, MASSACHUSETTS'.

WIRE-STEIPPING DEVICE.'

I lSpeoication of Letters Patent.

Application med September 29,1909. Serial No. 520,078.

Be it known that I, FREDERICK A. SWAN, a citizen of the United States, residing at Cliftondale, county of Essex, and State of Massachusetts, have invented an Improvement in Wire-Stripping Devices, of which the following description, in connection with the accompanying drawin is a specifcation, like characters on the rawing representing likel parts. f

This invention has for its object to rovide a novel device forrapidly and e ectively stripping insulation from wire. In order to secure an insulated wire to a binding post, it is necsary to strip the insulation from the wire, and it is now the comy mon practice for workmen to use a jack stripping -tlie'wire with a jack- 20 knife for this purpose. f ,This o eration of ifo takes some time, and unless the workman is careful, he does not thoroughly clean the wire.

The object of my invention is to provide a novel device which can be readily carried from one lace to another and which can be readily c amped to a bench or table and which will rapidly and effectively stri the insulation from the ends of an ated wire, and at the same time leave the stripped wire clean and in proper condition to be secured to the binding post. One embodiment of my invention will first be described and then the novel features thereof will be pointedV out in the appended claims.

In the drawings, Fi showing the device; Fig. 2 is a section on the line Fig. 1; 3 is a section on the line y-y, Fig. 1; Figs. 4, 5 and are views of the strip ing jaws showing different positions of t e jaws; Fig. 7 is an enlarged perspective View of one of the jaws.

My improved device as herein shown comprises a.- pair of wire-stripping jaws adapted to grasp the wire and out into the insulation,

land means to rotate the jaws relative to the wire and at the same time mover them longitudinally of the wire thereby completing the wire-stripping operation. The lwirestri ping jaws are shown at 3 and 4, respec- Jive y, and the are both` carried by a s indle e 1 is a side viewv The frame 7 may be of any suitable shape adapted to sustain the parts, but I will pref-l erabl make it of a construction so that it can e readily clamped to a tabe l0 or other support, and for this purpose I have shown the frame 6 rovided with the clamp'- ing arm 11 adapted) to embrace the edge of the table and carrying a clamping-screw 12 Ily which the frame is clamped to the table. he spindle 5has fast therewith' a gear 13 which meshes with and is driven by a driving gear 1li-which is journaled to the frame 7 and which may be operated either by hand or by power. The pinion 13 is a long-faced pinion so that the teeth thereof remain in mesh with the teeth of gear 14 in any longitudinal position of the spindle 5.

Provision is made forclamping the jaws to the wire during the stripping operation and in the present embodiment of my invention this is accomplished b'y a clamping arm 15 that is pivoted at 16 to a yoke 17 that embraces the two jaws and is secured to the jaw 3 by means of the screw 18. The Shanks of the jaws are made resilient and the clamping member 15 has thecam-sliaped end so that when it is thrown from the position shown in Fig. 4 into the position shownin Figs. 5 and 6, it will force the jaws together. The jaw's are made with the cutting edges 19 which are preferably slightly hol- .'low so that when thejaws are closed together, they will bite into the insulation an'd will fit around the wire.

Patented Anges, 1910.

The frame 7 is provided with an arm 20 which carries at its end a Wire-guiding device 21 having an aperture through which the insulated wire I'nay be passed and which operates to hold the-wire while it is being stripped. T hev shaft is provided with a stoparm 22 which engages onevor another of t e two stops 23 and 24 thereby to limit the ex# tent of rotary movement of the spindle.

The o eration of the device will be aparent om the fore ing description, but Eriey stated is as fo ows: Assuming that the spindle is in the position shown in Fig. 1, the end of the wire 25 to`-be stripped is inserted throughy the aperture in the wire ide 21, as seen in Fi 4, and islocated tween the jaws 3 an varm 15 is then thrown into the position `shownin Fig. 5 thereby clamping the jaws again` st the wire and causin 'the cutting ges 19 thereof to cut intot e insulation.

The driving wheel 14 is then rotated thereby 4. The clampingk proper distance through the wire guide 2l move the jaws simultaneously in a direction longitudinally of the wire.

be obvious, thus leaving the wire in the conlof means to clamp the jaws onto the wire,

rotating the spindle, and this rotation of the i splndle serves to move it longitudinally g combined rotary and longitudinal movement of the spindle, the stripping jaws 3 and' 4 strip th`e insulation from the wire, as will 5 dition shown in Fig. 6. The stop 24 serves to limit the backward movement of the spin- 1 dlein the same manner that the stop limits the forward movement thereof.

Il'. willbe seen from the foregoing that the o eration of strippin the wire involves mere y vinserting the en of the wire the and then turning the clamping arm l5 andy rotating the driving wheel 14.

I have shown herein one embodi-ment only of the invention and therefore do not wish to be limited to the constructional details illustrated. A

Havin fully described my invention,` what I claim as new and desire to secure by Letters Patent is 1. In a device `for stripping insulation from wire, the combination with a wire guide,` of a pair of stripping jaws, and means to rotate said jaws anu simultaneously move them in a direction longitudinally of the wire. v

2. In a device of the class described, the combinationl with a pair of stripping jaws,

means to rotate said jaws, and means to 3. In a device of the class described, the combination with a spindle, of a pair ,of

stripping jaws carried bythe spindle, means to clamp the jaws together, and means to combination with a frame, of a wire guide carried thereby, a spindle rotatably mounted in the frame, a pair of stripping jaws car-l ried hy the spindle, means to clamp said jaws onto a wire to be stripped, and means j o rotate the spindle `and simultaneously givey it a longitudinal movement. f

5. In a device of the class described, the

' combination with a frame, cfa wire guidev supported thereby, a spindle journaled in said frame, said spind threaded engagement with the frame, a pair of stripping jaws carried by the spindle, and means to rotate the spindle, said screwthreaded engagement between the spindle and. frame operating to move the spindlel longitudinally during its rotation.

6. In a device of the class described, the combination with a pair of stripping jaws, of means to clamp the jaws onto the wire to be stripped, jaw-rotating mechanism, and means to move the jaws in a direction longitudinally of the wire while they are rotat- 1n g?. In a device for stripping insulation from wire, the combination with a wire guide, of a pair of stripping jaws, -jaw-roe having a screwj.

tating mechanism, and means to give a rela- Y tive movement of the jaws and wire guide 1n a direction longitudinally ofthe wire vwhile the jaws are rotating.

In testimony whereof, I have signed my D two subscribing witnesses.

v Witnesses:

Lotus C. SMITH, THOMAS J. DRUMMOND.

' name to this specification, in the presence of FREDERICK A. SWAN; 

